Výsledky vyhledávání - "O. N. Petrishchev"

Akademický článek

POWERFUL SOURCES OF PULSE HIGH-FREQUENCY ELECTROMECHANICAL TRANSDUCERS FOR MEASUREMENT, TESTING AND DIAGNOSTICS

Autor: S. Yu. Plesnetsov, O. N. Petrishchev, R. P. Mygushchenko, G. M. Suchkov, S. V. Sotnik, O. Yu. Kropachek

Publikováno v: Electrical engineering & Electromechanics, Iss 2, Pp 31-35 (2018)

Aim. Development of powerful current radio pulses generators (CRPG) for powering high-frequency electromechanical transducers based on IGBT transistors. Methodology. To carry out the research, the statements of the magnetic and electromagnetic fields

Externí odkaz: https://doaj.org/article/6ed6f93060fe4a42bc7ddf75a3e63ae5

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Excitation of Spatially Developed Lamb Waves by a System of Body and Surface Loads (Part 2)

Autor: O. N. Petrishchev, M. I. Romaniuk

Publikováno v: International Applied Mechanics. 56:92-114

The problem of excitation of spatially developed Lamb waves by a system of body and surface loads is formulated and completely solved by analytical methods. Using the direct and the inverse Hankel transforms, relations are derived for determining the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e48cea139107d3bca5f3e9bf0c754f09
https://doi.org/10.1007/s10778-020-00999-8

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Excitation of Spatially Developed Lamb Waves by a System of Body and Surface Loads (Part 1)

Autor: M. I. Romanyuk, O. N. Petrishchev

Publikováno v: International Applied Mechanics. 55:660-680

Principle and method for designing electroacoustic transducers operating in the mode of elastic wave excitation in isotropic solid bodies are discussed. Relations that completely define the entire set of eigenfunctions (normal waves) are derived by s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::84e02a2454430e5dd36d5d4e07f74dcf
https://doi.org/10.1007/s10778-019-00990-y

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Modeling the Radiation of Ultrasonic Waves by a Unit Source of Acoustic Emission Noise

Autor: O. N. Petrishchev, N. S. Trushko

Publikováno v: International Applied Mechanics. 51:207-222

The generation of radial Lamb waves by a system of volume and surface loads acting within a finite region of an isotropic elastic plate is studied. General solutions are used to model the emission of ultrasonic waves in an isotropic plate by a unit s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8dd260b6e2b93b9f062b7fbbfc0cced8
https://doi.org/10.1007/s10778-015-0686-6

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Peculiarities of ultrasonic pulsed immersion testing of blanks of railway axles

Autor: O. N. Petrishchev, M. E. Poznyakova, G. M. Suchkov

Publikováno v: Russian Journal of Nondestructive Testing. 52:383-385

Research has been conducted and methods have been developed for revealing small-sized flaws in blanks of railway axles by ultrasonic immersion testing technique. It has been established that the use of probing pulse packets significantly improves the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::95d3f1eb875992cb22d351acc79997ae
https://doi.org/10.1134/s1061830916070081

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Effect of sizes and polarizing magnetic field on the values of material constants of ferrimagnets in magnetomechanical resonance conditions

Autor: I. V. Linchevskii, O. N. Petrishchev

Publikováno v: Technical Physics. 58:1549-1553

A mathematical model of magnetomechanical compression-extension oscillations of a ferrimagnet having the shape of a right parallelepiped in a polarizing magnetic field is constructed. The solution to the equation derived here makes it possible to det

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1209ba72804a8b5823044708d58569cc
https://doi.org/10.1134/s1063784213110169

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A generator of probing pulses for EMA flaw detectors

Autor: I. V. Cherednichenko, S. V. Khashchina, O. N. Petrishchev, V. V. Fedorov, M. S. Maslova, A. V. Desyatnichenko, G. M. Suchkov

Publikováno v: Russian Journal of Nondestructive Testing. 48:537-540

It is shown that an increase in the power of a probing-pulse generator is a desirable way to further increase the efficiency of EMA flaw detectors. A generator with an increased power was developed. Such a generator can form radio pulses of a current

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::47737c9cf991c4bf235b8438cc6242c8
https://doi.org/10.1134/s1061830912090082

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PRINCIPLES OF CALCULATION OF THE PIEZOELECTRIC ELEMENTS WITH SURFACES PARTIAL ELECTRODES COVERING

Autor: Zh. V. Sotula, K. V. Bazilo, O. N. Petrishchev, V. M. Sharapov

Publikováno v: Radio Electronics, Computer Science, Control; № 1 (2015): Radio Electronics, Computer Science, Control
Радиоэлектроника, информатика, управление; № 1 (2015): Радиоэлектроника, информатика, управление
Радіоелектроніка, iнформатика, управління; № 1 (2015): Радіоелектроніка, інформатика, управління

Решена актуальная задача определения вычислительных процедур, которые позволяют выполнить оценку параметров напряженно-деформирован�

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::56d8d7458df30f87cd1c4877600dcfa5
https://doi.org/10.15588/1607-3274-2015-1-2

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